Door-spring.



n 'Patnted fab. I8, |902.

w. nAnnuvE.

DUUR SPRING.

(Lpplicstionlld l'eb. 1, 1901.)

(un indu.)

yi/[iam #agb-0%; Invemqr @Hforneys UNITED STATES PATENT OEEICE.

` WILLIAM HARGROVE, OF MONTREALCANADA, ASSIGNOROF ONE-FOURTH `TOBREADALBANE CAMPBELL MACLEAN, OF MONTREAL, CANADA.

. SHIPS.

A DooR-sPRlNe.,

f SPECIFICATION T @Mu/hom it may concern:

Beit known that I, WILLIAM HARGROVE, a subject ofthe Queen of GreatBritain, residing in the city and district of Montreal, Province ofQuebec, Canada, have invented certain new and useful Improvements inDoor- Springs; and I do hereby declare that the following lis a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to improvements in door-springs; and the objects inview are, iirst, to provide means for easily'placing the closure-springunder tension, to relax or regulate the tension as found desirable, andto check the closing movement of the door so as to obviate violentslamming thereof.

With these ends in view the invention consists in the novel constructionand arrangement of parts, which will be hereinafter fully described andclaimed.

In the drawings hereto annexed, forming a part of this specification,Figure 1 is an ele-` vation of the improved spring applied to'a door.Fig. 2 is another elevation at right angles to Fig. 1. Fig. 3 is asectional plan on the line 3 3 of Fig. 1. Fig. 4 is a vertical sectionon the line 4; 4 of Fig. 1. Fig. 5 .is another vertical section on theline 5 5 of Fig.

1, and Fig. 6 is a transverse detail `section on.

ed to rest upon the bearing-ear 11, and it is held in place againstaccidental disengagement from` the two bearing-ears 11 12 by a key orcotter 15, whereby the arbor is mounted for axial rotation in the mainbracket,and it is retained in place therein by the collar and keydisposed on opposite sides of the bracket- Said arbor has a ratchet 16made fast therewith and arranged between the bracketears, and the upperpart of the arbor is exf'erming part of Letters :Patent No. 693,389,dated February 1s, 1902. Appueatien filed February I, 1901. serial No.45,569. (No model.)

tended a suitable distance above the bracketearll in order that thecoiled closure-spring 17 may be iitted around said upper part of thearbor and be seated upon the collar 14 thereof, said lower end of theclosure-spring being made fast in any suitable way with the arbor. TheupperA end of the closure-spring 17 is tted around a stud 18 on theupperbracket 1S, .the latter adapted to be secured tothe door-jamb at asuitable height above the main bracket-'plate 10, said upper end of thespring 17 being-secured in a suitable way to the stud 18,subs'tantiallyas shown by Fionli.

19 designates the door-arm, which is provided at one endwith an eye 20,that is loosely fitted on; the arbor l13, immediately belowthe ratchet16 thereof, said arbor thus forming a means for pivotally connecting thedoor-arm to the bracket-plate 10. This arm carries a pawl 21,` which ispivoted thereto by the pin 22, said pawl engaging with the ratchet 16,as-

shown by Fig. 3. An emergency-pawl 23 is pivoted tothe bracket-plate bythe pin 24, and this emergency-pawl is arranged on the opposite sideofthe ratchet from the pawl 21, whereby the pawl 23 prevents the ratchetfrom rotating during the operation of placing the spring 17 under thedesiredtension.

A bracket 25 is adapted to be secured to the door, as shown byFigs. 1,3, and 6, said bracket being furnished with the parallel ears 26, be-

tween which is slidably fitted the door-arm 19. This arm is arranged toride against a friction-roll 27, which is arranged between thefears 26and is loosely mounted on a pin 27, as'shown by Fig. 6. In one of theears of this door-bracket is journaled a screw 28, having a conical ortapered end 29, the latter extending alongside of the door-arm, so as toprevent the latter from moving out of posi.

tion between the ears 26 when the screw is adjusted to the positionshown by Fig.l 6. The screw 28 may, however, bew tightened against thearm 19, so as to clamp the latter iirmly to the doorbracket,whereby thedevice is adapt- 9 ed to serve as a ldoor-stop,becausethe rod 19 isfirmly held on the door by the door-bracket and the screw, and it isconnected in like manner to the door-jamb by the arbor and the mainbracket 10. `0n this door-arm19 is loosely fitted a check-spring 30, thelatter being held against disengagement from the arm by the collar 3l,having the clamping-screw 32,which is adapted to bind against the arm19. A washer 33 is fitted loosely on the arm to occupy a positionbetween the door-bracket and one end of the check-spring, as shown byFigs. 1 and 3, whereby one end of the check or cushion spring is seatedagainst the xed collar and its other end is seated against a washerwhich bears against the doorbracket.

From the foregoing description, taken in connection with the drawings,it will be understood that the improved spring may be easily applied inoperative position by securing the several brackets to the jamb and tothe door, respectively. The arm 19 may be disengaged from thedoor-bracket,which places it in a coudition free from the door andenables it to be turned by hand around the axis afforded by the arbor.The rod may be moved back and forth for the purpose of placing theclosurespring under tension through the medium of the pawl and ratchet21 and 16, respectively, because the outward movement of the arm makesthe pawl turn the ratchet and the arbor having the lower end of thespring fastened thereto, while the backward movement of the arm allowsthe pawl 21 to slip idly ovel` the ratchet,the emergency-pawl 23preventing the ratchet from turning backward and relaxing the tension ofthe spring. The described adaptation allows the arm to be used as alever for placing the spring under tension, and these devices may beemployed to let down the tension of the spring without injury to theparts by reversing the mode of operation heretofore described. Itisobvious that in the summer season ot the year the doorspring is notrequired, and at this time the tension may be taken off the spring 17 byreleasing the emergency-pawl 23. Ordinarily the rod or arm 19 isarranged to slide freely through the door-bracket when the door isopened or when it is closed by the recoil of the spring 17, and in thisconnection it will be noted that the spring 30 serves as the cushion toprevent violent slamming of the door when the latter is blown to by astrong gust of wind. i

Changes within the scope of the appended claims may-be made in the formand proportion of some' of the parts, while their essential features areretained and the spirit of the invention is embodied. Hence I do notdesire to be limited to the precise form of all the parts a's shown,reserving the right to vary therefrom.

I claim- 1. A door-spring of the class described comprising ajamie-bracket adapted to be secured in a stationary position on adoor-jamb, a spring-actuated arborjournaled in saidjambbracket, a singleratchet secured fast to said arbor and disposed adjacent to saidjambbracket, a single continuous door-rod loosely fitted on the arbor, apawl 23 pivoted to the jamb-bracket and arranged to engage with saidratchet and occupying a stationary relation at all times to thedoor-rod, another pawl 21 pivoted to and movable with said door-rod andengaging normally with said ratchet, and means adapted to loosely anddetachably connect said door-rod to a door, whereby the pawl 23 may beengaged with the ratchet and the door-rod and its pawl 21 may bemanipulated by hand to place under tension the spring of said arbor, asset forth.

2. A door-spring of the class described comprising a jamb-bracketprovided with offstanding plates, a spring-actuated arbor having acylindrical portion journaled in said plates and an angular portionarranged in a plane between said plates, a single ratchet disposedbetween the plates and fitted to the angular part of the arbor to befast therewith, a single door-rod fitted loosely on the cylindrical partof the arbor and adapted, under certain conditions, to turn looselythereon, a pawl 23 pivoted to one of the bracket-plates and adapted toengage with the ratchet, another pawl 21 pivoted to the door-rod to movetherewith and engaging normally with the ratchet, and means adapted toloosely connect said door-rod to a door, substantially as described.

3. A door-spring of the class described com prising a j amb-bracket, aspring-actuated arbor mounted therein, a door-bracket provided withotfstanding plates arranged to form an intermediate space which opensthrough the outer end of the bracket and one of said plates having athreaded opening, a friction-roller journaled in said door-bracket atthe closed inner side of the space therein, a single straight door-rodconnected with the arbor to be actuated thereby and fitted loosely inthe door-bracket to occupy the intermediate space and to lie between thefriction-roller and the plane of the threaded opening in saiddoor-bracket, and an adjusting-screw 28 arranged at right angles to thelength of the door-rod and having a pointed end 29 disposed incooperative relation to the door-rod,where by the adj usting-screw maybe retracted and the door-rod may be withdrawn by lateral adj ustmentfrom the door-bracket or said screw may be adjusted to confine thedoor-rod in the bracket or said screw may tightly impinge the door-rodto make the latter fast with the bracket, substantially as described.

4. A door-spring of the class described comprising a lamb-bracket, aspring-actuated arbor mounted therein, a door-bracket having arod-receiving space which opens through the outer end thereof, a singlestraight doorrod connected operatively to said arbor and extendingthrough said space of the doorbracket and withdrawable therefrom by alateral adjustment, means for slidably confin- Ico ing the door-rod inthe door-bracket, a, Washer tted on a, projecting portion ofthe door-rodand bearing against the door-bracket, a, cushion-spring also itted onsaid portion of the rod and seated against the washer, a, collarindependent of the door-bracket and adjustably fitted on the saidportionof the rod and engaging with the outer end portion of the spring,and a clamping-screw mounted on the collar and mpinging the rod,Substantially as 1o described.

In Witness whereof I have hereunto set my hand in the presence of twoWitnesses.

WILLIAM IIARGROVE.

Witnesses:

J. A. MARION, B. C. MACLEAN.

